Class 300 Flanges - Dimensions As Per Ansi B 16.5 Standards , Superior Durability And Precision Engineering

DIMENSIONS OF CLASS 300 FLANGES (ANSI B 16.5) (in mm) Nominal Pipe Size Flange Dia 'O' Dia of Bolt Circle 'A' Dia of Bolt Holes 'D' No. of Holes Thk of Flange 'C' Diameter at Weld Bevel Dia of Hub 'E' Length Through Hub Bore 'B' Dia of R/F R Depth of Socket F Length of Threading S/O & S/W Y W/N Y L/J Y S/O & S/W B L/J B 1/2'' 15 95.2 66.7 15.9 4 14.3 21.3 38.1 22.2 52.4 22.2 22.3 22.9 34.9 9.5 15.9 3/4'' 20 117.5 82.5 19.0 4 15.9 26.7 47.6 25.4 57.1 25.4 27.7 28.2 42.9 11.1 15.9 1'' 25 123.8 88.9 19.0 4 17.5 33.5 54.0 27.0 61.9 27.0 34.5 35.0 50.8 12.7 17.5 1 '' 32 133.3 98.4 19.0 4 19.0 42.2 63.5 27.0 65.1 27.0 43.2 43.7 63.5 14.3 20.6 1 '' 40 155.6 114.3 22.2 4 20.6 48.3 69.8 30.2 68.3 30.2 49.5 50.0 73.0 15.9 22.2 2'' 50 165.1 127.0 19.0 8 22.2 60.4 84.1 33.3 69.8 33.3 62.0 62.5 92.1 17.5 25.4 2 '' 65 190.5 149.2 22.2 8 25.4 73.1 100.0 38.1 76.2 38.1 74.7 75.4 104.8 19.0 28.6 3'' 80 209.5 168.3 22.2 8 28.6 88.9 117.5 42.9 79.4 42.9 90.7 91.4 127.0 20.6 30.2 3 '' 90 228.5 184.2 22.2 8 30.2 101.6 133.4 44.5 81.0 44.5 103.4 104.1 140.0 20.6 31.7 4'' 100 254.0 200.0 22.2 8 31.8 114.3 146.0 47.6 85.7 47.6 116.1 116.8 157.2 23.8 33.3 5'' 125 279.4 234.9 22.2 8 34.9 141.2 177.8 50.8 98.4 50.8 143.8 144.5 185.7 - 36.5 6'' 150 317.5 269.9 22.2 12 36.5 168.4 206.4 52.4 98.4 52.4 170.7 171.4 215.9 - 39.7 8'' 200 381.0 330.2 25.4 12 41.3 219.2 260.3 61.9 111.1 61.9 221.5 222.2 269.9 - 44.4 10'' 250 444.5 387.3 28.6 16 47.6 273.0 320.7 66.7 117.5 95.2 276.3 277.4 323.8 - 49.2 12'' 300 520.7 450.8 31.7 16 50.8 323.8 374.6 73.0 130.2 101.6 327.1 328.2 381.0 - 55.6 14'' 350 584.2 514.3 31.7 20 54.0 355.6 425.4 76.2 142.9 111.1 359.1 360.2 412.7 - 57.1 16'' 400 647.7 571.5 34.9 20 57.2 406.4 482.6 82.5 146.0 120.6 410.5 411.2 469.9 - 63.5 18'' 450 711.2 628.5 34.9 24 60.3 457.2 533.4 88.9 158.7 130.2 461.8 462.3 533.4 - 68.3 20'' 500 774.7 685.8 34.9 24 63.5 508.0 587.4 95.2 161.9 139.7 513.1 514.3 584.2 - 73.0 24'' 600 914.4 812.8 41.3 24 69.8 609.6 701.7 106.4 168.3 152.4 615.9 615.9 692.1 - 82.5